AD 2007-03-11 Airworthiness Directives; Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) Airplanes

This AD applies to Bombardier Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category; as identified in Bombardier Alert Service Bulletin A601R-35-014, dated September 25, 2003; and Bombardier Service Bulletin 601R-35-016, dated September 8, 2005.

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. Inspections/Corrective Action (f) Do the detailed inspections for discrepancies of certain chemical oxygen generators of each flight attendant and lavatory oxygen panel, as applicable, and each passenger service unit of the passenger oxygen system, as specified in paragraphs (f)(1) and (f)(2) of this AD, as applicable. (1) For airplanes identified in paragraph 1.A. of Bombardier Alert Service Bulletin A601R-35-014, dated September 25, 2003: Within 550 flight hours after the effective date of this AD, do a one-time inspection for correct alignment and engagement of the release pin with the lanyard tube in the mask container module of the activation (firing) mechanism in the chemical oxygen generator by doing all the actions, including all applicable corrective actions, in accordance with the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-35-014, dated September 25, 2003. Do all applicable corrective actions before further flight. (2) For airplanes identified in paragraph 1.A. of Bombardier Service Bulletin 601R-35-016, dated September 8, 2005: Within 1,100 flight hours after the effective date of this AD; do a one-time inspection for correct installation of the release pin of the activation mechanism of the chemical oxygen generator, by doing all the actions, including all applicable corrective actions, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 601R-35-016, dated September 8, 2005. Do all applicable corrective actions before further flight. Note 1: For the purposes of this AD, a detailed inspection is: “An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.” Note 2: Bombardier Service Bulletin 601R-35-016, dated September 8, 2005, refers to B/E Aerospace Service Bulletin 117003-35-4, dated March 29, 2001, as an additional source of service information for accomplishing the inspection and corrective action specified in paragraph (f) of this AD. Alternative Methods of Compliance (AMOCs) (g)(1) The Manager, New York Aircraft Certification Office, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Related Information (h) Canadian airworthiness directive CF-2006-11, dated May 31, 2006, also addresses the subject of this AD. Material Incorporated by Reference (i) You must use Bombardier Alert Service Bulletin A601R-35-014, dated September 25, 2003; and Bombardier Service Bulletin 601R-35-016, dated September 8, 2005; as applicable; to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Bombardier, Inc., Canadair, Aerospace Group, P.O. Box 6087, Station Centre-ville, Montreal, Quebec H3C 3G9, Canada, for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street SW., Room PL-401, Nassif Building, Washington, DC; on the Internet at http://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html . Issued in Renton, Washington, on January 24, 2007. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E7-1600 Filed 2-2-07; 8:45 am] BILLING CODE 4910-13-P

This AD results from several incidents, on certain airplane models, of incorrect installation of the release pin into the safety pin hole of the activation mechanism of the chemical oxygen generator; this resulted in failure to activate the chemical oxygen generator when required. A separate incident occurred on a different airplane model during deployment of the cabin oxygen system, and resulted in failure of the release pin to activate the oxygen generator at a flight attendant station. We are issuing this AD to prevent failure of the activation mechanism of the chemical oxygen generator, which could result in the unavailability of supplemental oxygen and possible incapacitation of passengers and cabin crew during an in-flight decompression.